Dynamic VLAN Assignment And Auto Smartport

Dynamic VLAN Assignment and AutoSmartport Configuration on a SG350X andSG550XObjectiveThis document provides instructions on how to configure the Generic VLAN Registration Protocol(GVRP) settings and Auto Smartport on your switches.If you are unfamiliar with some terms in this document, check out Cisco Business: Glossary ofNew Terms.IntroductionGeneric Attribute Registration Protocol (GARP) VLAN Registration Protocol or Generic VLANRegistration Protocol (GVRP) allows devices to dynamically exchange Virtual Local Area Network(VLAN) configuration information to make configuration of VLANs easier. When GVRP is globallyenabled, the manually/statically created VLANs will automatically propagate the VLAN ID tointerconnecting switches and interfaces. Dynamic VLAN Assignment is used to eliminate thechance for error when configuring VLANs when working with large networks. When the switchreceives VLAN information through GVRP and GVRP Registration, the receiving interface joinsthat VLAN. If an interface attempts to join a VLAN that does not exist and Dynamic VLAN creationis enabled, the switch automatically creates the VLAN.It is important to note that in order for this to work on an access port, the end device has to beGVRP enabled (GVRP enabled NICs if they are servers or PCs).Smartport is an interface to which a built-in or user-defined macro may be applied. These macrosare designed to provide a means of quickly configuring the device to support the communicationrequirements and utilize the features of various types of network devices. The network access andQoS requirements vary if the interface is connected to an IP phone, a printer, a router, and/orAccess Point (AP).Applicable Devices SG350X SeriesSG550X SeriesSoftware Version 2.3.5.63To configure Dynamic VLAN Assignment and Auto Smartport Configuration, follow theguideline below:Topology:

Note: The 2 non-active switches are not connected to the active switch until the conclusion.The port that is being configured with GVRP must be configured in truck mode or general mode asGVRP requires support for tagging. When the VLAN's propagate from the active switch to the nonactive switches via GVRP, it would be considered as dynamic VLANs.Note: If there is an error "vlan not created by user", then only static VLANs (manually created) canbe added to a port configured as an access port. GVRP does not work the same as VTP (Server –Client).The steps below are configured in Advanced mode in the Display Mode field at the top of the webconfiguration page.Table of Contents1. Configuring Auto Smartports on the SG350XG and SG550XG2. Configure GVRP settings on the SG550X-24 (active)3. Setting up VLAN settings on the SG550X-24 (active)4. How to Configure Interface settings on SG550X-24 (active)5. How to Set Up Port VLAN Membership on the active Switch6. Configuring GVRP on the Non-active switch7. Setting up Interface settings on the Non-active switch8. VerificationConfigure GVRP Settings on the SG550X-24 (active)To learn more about configuring GVRP Settings on a switch, click here.Step 1. Log in to the web-based utility of your active switch and navigate to VLAN Management GVRP Settings.Note: In this example, one of the SG550X-24 will be the active switch.

Step 2. Check the Enable checkbox to enable GVRP Global Status to globally enable GVRP onthe switch.Step 3. Click Apply to enable GVRP features.Step 4. Click the radio button of the interface on which you would like to configure GVRP. Thenclick Edit. to modify the GVRP settings for the selected interface.Note: In this example, we will be configuring GE23 and GE24.Step 5. The Edit GVRP Setting window appears.

Step 6. (Optional) Click the appropriate radio button and choose a new interface from the Port orLink Aggregation Group (LAG) drop-down list to change the interface whose settings you want tochange. LAG bundles individual Ethernet links into a single logical link that can increase thethroughput further than a single connection can support.Step 7. Check the Enable checkbox in the GVRP State field to enable GVRP features on thisinterface.

Step 8. Check the Enable check box in the Dynamic VLAN Creation field to have a VLANdynamically created if it does not exist when GVRP information is received for that VLAN on theselected interface. If Dynamic VLAN Creation is disabled, the switch only recognizes VLANs thathave been manually created.Note: This is enabled by default.Step 9. (Optional) Check the Enable check box in the GVRP Registration field to have theselected interface join a VLAN when GVRP information is received for that VLAN on the selectedinterface. If GVRP registration is disabled, an interface only associates with a VLAN that it ismanually configured to be on.

Step 10. Click Apply to save the updated GVRP settings for the selected interface and then clickClose to exit the Edit GVRP Setting window.Step 11. (Optional) To copy the GVRP settings of one interface to several other interfaces, clickthe radio button of the desired interface and click Copy Settings. The Copy Settings windowappears.Step 12. (Optional) Enter the interface number(s) or interface name(s) of the interface(s) to which

you wish to copy the settings of the chosen interface in the provided field. Then click Apply tosave your changes or click Close to cancel your changes.Setting Up VLAN Settings on the SG550X-24 (active)Step 1. Navigate to VLAN Management VLAN Settings.Step 2. Click Add. to create new VLANs. The Add VLAN window appears.Note: There are two ways to create a VLAN. You can create a single VLAN or you can set a rangeof new VLANs. In this example, we will be creating a range of VLANs.

Step 3. To create a single VLAN, click the VLAN radio button. Then enter the followinginformation: VLAN ID — The ID of the new VLAN.VLAN Name — The name of the new VLANStep 4. To create a range of VLANs, click the Range radio button. Then enter the followinginformation: VLAN Range — The range, according to the number of VLANs you want to create. Forexample, if you want to create 10 VLANs, then enter a range that will fit your needs. In thisexample, we will create VLAN 10 to 20.

Step 5. Click Apply to save your configuration.How to Configure Interface Settings on the SG550X-24(active)Step 1. Navigate to VLAN Management Interface Settings.

Step 2. Select a Global Ethertype Tagging method. The options are:Dot1q-8100 — Also known as IEEE 802.1Q. It is the standard for tagging frames on a trunkand supports up to 4096 VLANs. The TPID is usually set to 0x8100 to identify the frame as anIEEE802.1Q frame.Dot1ad-88a8 — implements a standard protocol for double tagging of data by using a featurecalled QinQ. Data traffic coming from the customer side are double tagged in the providernetwork where the inner tag is the customer-tag (C-tag) and the outer tag is provider-tag (Stag). S-VLAN tag or S-tag is known as Service tag which is used to forward packets into theprovider network. The S-tag segregate traffic between various customers, while preservice thecustomer VLAN tags. This is done with QinQ which provides isolation between serviceprovider networks and customers' networks. The device is a provider bridge that supportsport-based c-tagged service interface.9100 — Non-standard QinQ ethertype9200 — Non-standard tagging.Note: In this example, we used the default Dot1q-8100 for the Global Ethertype Tagging. Step 3. Click Apply.

Step 4. Click the radio button of the interface that you have configured GVRP. Ports that areconfigured with GVRP needs to be configured as trunk ports.Note: In this example, we will be configuring GE23 and GE24 as trunk ports.Step 5. Click Edit. to edit the interface. The Edit Interface Settings windows opens.Step 6. (Optional) Click the appropriate radio button and choose a new interface from the Port orLAG drop-down list to change the interface whose settings you want to change.

Step 7. Select either Layer 2 or Layer 3 in the Switchport Mode field.Note: In this example, the default (Layer 2) was selected.Step 8. Select Trunk in the Interface VLAN Mode drop-down list. The interface is an untaggedmember of one VLAN at most, and is a tagged member of zero or more VLANs.

Step 9. Select an Ethertype Tagging method for the S-VLAN tag. The options are:Use Global Setting (Dot1q)Dot1q - 8100Dot1ad - 88a891009200Note: In this example, we used the default value: Use Global Setting (Dot1q). Step 10. Then click Apply to save the changes.

Step 11. (Optional) If you have configured GVRP on more than one interface then you can selectthe interface that you have just configured and click Copy Settings. This will allow you to copythe configuration that you have just configured to other interfaces.Step 12. (Optional) In the pop-up window that appears, enter the port where you wish to apply thesame settings and click Apply.Note: In this example, the settings from GE23 are going to be copied to GE24 only.How to Set Up Port VLAN Membership Settings on the active

SwitchStep 1. Navigate to VLAN Management Port VLAN Membership.Step 2. Click the radio button of the interfaces that you have configured as trunk port.Then clickJoin VLAN. to edit the VLAN membership of that interface.Step 3. (Optional) Click the appropriate radio button and choose a new interface from the Port orLAG drop-down list to change the interface whose settings you want to change.

Step 4. When the port is in Trunk mode, it will be a member of this VLAN. Select the Native VLANID in the Native VLAN ID drop-down list.Note: In this example, we will be using VLAN 1 as the native VLAN ID.Step 5. Select User Defined radio button in the Tagged VLANs field. Then enter the VLAN ID'sthat you want this port to be a member of.Note: In this example, we will be using VLAN: 1, 10-20 for GE23 and GE24.

Step 6. Then click Apply to save your changes.Note: Repeat steps 2-6 if you have more interfaces that needs to be configured.Step 7. Press the Save button on the top to save your configuration to the startup configurationfile.Configuring GVRP Settings on the Non-active SwitchStep 1. Log into the web configuration page of the non-active switch and navigate to VLANManagement GVRP Settings. The GVRP Settings page opens.Note: Since the non-active switches is not connected to the active switch, the default IP address is192.168.1.254. You would have to put your PC to have a static IP address in that network in orderto connect to it.Proceed to configure the same way as the section: Configure GVRP Settings on SG550X-24(active) for both of the non-switches. Configure only the port that is going to be connected to theactive SG550X-24 switch. In this example, both of the non-active switch is using port 24 toconnect to the active switch.